VII/218            Southern Stars embedded in nebulosity  (van den Bergh+, 1975)
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Catalogue of southern stars embedded in nebulosity.
     Van den Bergh S., Herbst W.
    <Astron. J. 80, 208 (1975)>
    =1975AJ.....80..208V
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ADC_Keywords: Nebulae ; Milky Way

Description:
    A  survey of the Milky Way southward of the Palomar Sky Survey for the
    identification of reflection nebulae was  carried  out  at  the  Cerro
    Tololo Inter-American Observatory in Chile.  Plates in blue light were
    obtained at  the Curtis Schmidt telescope covering  a strip of plus or
    minus  six degrees of the galactic  equator.  Red sensitive plates for
    comparison were  also obtained  with the  same telescope  covering the
    same area near the galactic plane.  Observatory staff members and some
    students of the University of Toronto,  Canada assisted in identifying
    stars embedded  in nebulosity as  shown by the  plates.  Although this
    catalogue  roughly complements the Catalogue  of Reflection Nebulae of
    van  den Berg (1966AJ.....71..990V,  Cat.  <VII/21>),  the region here
    surveyed is more narrowly confined to the galactic equator.

File Summary:
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 FileName   Lrecl    Records    Explanations
-------------------------------------------------------------------------------
ReadMe         80          .    This file
catalog.dat    71        136    The Catalogue (Table I of publication)
notes.dat      80         47    Full notes of publication for Table I
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See also:
    VII/21 : Catalogue of Reflection Nebulae (Van den Bergh, 1966)

Nomenclature Notes:
    Objects of this catalogue are frequently designated in the literature
    with the acronym VDBH.

Byte-by-byte Description of file: catalog.dat
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   Bytes Format  Units  Label     Explanations
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   1-  2  I2     ---    BHe       [1,93] BHe id number
   3-  7  A5     ---  m_BHe       BHe components as (a,b,c)
  12- 19  A8     ---    IDs       Alternate designation
  22- 23  I2     h      RAh       Right Ascension B1950 (hours)
  25- 28  F4.1   min    RAm       Right Ascension B1950 (minutes)
      31  A1     ---    DE-       Declination B1950 (sign)
  32- 33  I2     deg    DEd       Declination B1950 (degrees)
  35- 36  I2     arcmin DEm       Declination B1950 (minutes)
  39- 42  A4     ---    Type      Type of nebula,                  see Note (1)
      43  A1     ---  u_Type      Uncertainty flag (:) on Type
  45- 47  A3     ---    Br        Brightness from blue plates,     see Note (2)
      48  A1     ---  u_Br        Uncertainty flag (:) on Br
  50- 51  A2     ---    Color     Coded reference to colors,       see Note (3)
      52  A1     ---  u_Color     Uncertainty flag (:) on Color
  54- 56  A3     ---    Abs       Absorption in field of nebula,   see Note (4)
      57  A1     ---  u_Abs       Uncertainty flag (:) on Absorb
  60- 62  F3.1   arcmin BDiam     ? Maximum diameter observed on blue plates
      63  A1     ---  u_BDiam     Uncertainty flag (:) on BDiaMax
  66- 68  F3.1   arcmin RDiam     ? Maximum diameter observed on red plates
      69  A1     ---  u_RDiam     Uncertainty flag (:) on RDiaMax
      71  A1     ---    Rem       [*] Note flag (*) detailed in file "notes.dat"
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Note (1): Types given are I, II, I-II, or pec.  These are defined as follows:
       I: Nebulae in which the illuminating star is embedded in the nebulosity.
      II: The illuminating star is situated outside the nebula.
    I-II: This combination type was undefined in the original publication.
     pec: Peculiar.
Note (2): Surface brightness is coded as follows:
     'vBr'=very bright; 'Br'=bright; 'M'=moderate; 'F'=faint; 'vF'=very faint.
Note (3): Color types are coded:
     'vB'=very blue;  'B'=blue;  'mB'=moderately blue;  'I'=intermediate;
     'mR'=moderately red;  'R'=red;  'vR'=very red.
Note (4): Absorption is coded:
     'Str'=strong;   'Mod'=moderate;  'Wk'=weak.
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Byte-by-byte Description of file: notes.dat
--------------------------------------------------------------------------------
   Bytes Format Units   Label     Explanations
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   1- 2   I2     ---    BHe       BHe id number
   3- 7   A5     ---  m_BHe       BHe components as (a,b,c)
  10-79   A70   ---     Text      Text of note
     80   A1    ---     Flag      '*' if note continues on next line
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Note to the electronic version: (by Raymond Bruton, pam99999@swbell.net
    and Patrick Chevalley, pch@crosswinds.net):

    The intended purpose of the electronic version of the BHe catalogue is
    for use with the computer plotting of star charts. Astronomical
    software, (Cartes du Ciel-Sky Charts) developed by the second editor
    (Patrick Chevalley) was used to test dataset validity (see
    http://www.astrosurf.org/astropc). Any errors in the dataset should be
    reported to the editors. Any gross error in the original should
    likewise be reported. As a check on errors the work of Herbst
    (1975AJ.....80..212H) was consulted. When used with the northern
    dataset of van den Berg (1966AJ.....71..990V, see Cat. <VII/21>) the
    work of Racine (1968AJ.....73..233R) was likewise consulted as a check
    for possible errors and misidentifications.

    The indiscriminate comparison of the present work with the work of
    van den Berg (1966AJ.....71..990V) is not recommended. When using the
    northern and southern datasets for reflection nebulae together for
    plots of surface distribution the differences are clearly evident.
    This was also indicated in the original publication of van den Berg
    and Herbst (1975AJ.....80..212H). For plots of the southern nebulae
    further from the galactic plane than the present work a remedy was
    sought and in part found. The catalogue of southern dark clouds of
    Hartley et al. (1986A&AS...63...27HC, see Cat. <VII/191>) was used
    because of prolific notes about association with bright nebulae.
    Although this combination was useful the editors also used the
    catalogue of Herbig and Bell (1988, see Cat. <V/73A> for cross checks
    on position errors. The editors were motivated to produce the present
    dataset in part due to the popularization of some BHe objects by
    Slotegraaf (1998). Mr. Slotegraaf also encouraged the production of
    the present dataset in private correspondence. This work would not
    have been possible without the use of the NASA Astrophysics Data
    System maintained at Harvard College, USA., for the obtaining of the
    original paper of van den Berg and Herbst (1975AJ.....80..212H), and
    closely related papers. The American Astronomical Society, and the
    University Press, Chicago, USA, are thanked for making copyrighted
    papers from the Astronomical Journal available to the NASA
    Astrophysics Data System and indirectly to the editors.

References:
  Hartley M., Manchester R.N., Tritton S.B., Gross W.M. 1986,
    Astron. Astrophy. Supp. Ser. 63, 27 (1986A&AS...63...27H), Cat. <VII/191>
  Herbig, G.H., Bell, K.R., 1988, Lick Observatory Bulletin No. 1111
    (Cat. V/73>)
  Herbst, W. 1975, Astron. J. 80, 212 (1975AJ.....80..212H)
  Slotegraaf, A. 1998 "Deepsky Observers Companion"
    (http://members.xoom.com/auke/index.html)
  van den Berg S., 1966, Astron. J. 71, 990 (1966AJ.....71..990V)
    (Cat. <VII/21>)
  van den Berg S., Herbst W., 1975, Astron. J. 80, 208 (1975AJ.....80..208V)
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(End)     Raymond Bruton [Fort Worth], Patrick Chevalley [Geneva]    26-May-2000